So far, the experience has been awesome for me. It's not that I can control the sexual and sometimes non-sexual aspects of this increadible girl, it's the feeling of responsibility, and odd sense of purpose, and ofcourse, it's soooo arousing.
nk,

That is the essence of a D/s relationship, in my opinion.

As for making mistakes, unfortunately even experienced Doms make them. Just learn from them.

I would suggest that whenever you play, have a timer in front of you. Start with short time periods, and build up to longer ones. I think that the timer was the best idea I ever had about online play because at least with it I know how long it has been.